Preparation of certain m-aminophenols and the use thereof for preparation of laser dyes

Patent · Tue Nov 11 00:00:00 EST 1986

OSTI ID:7146967

Hammond, P R

Methods are provided for making certain m-aminophenols using a sulfonation/alkali fusion procedure. The aminophenols are key intermediates in the synthesis of dyes, particularly efficient, stable dyes for laser application. Preparations of some rhodamine and phenoxazone dyes from the m-aminophenols are described.

• Assignee: Dept. of Energy, Washington, DC
• Patent Number(s): US 4622400
• OSTI ID: 7146967
• Resource Relation: Patent File Date: Filed date 29 Dec 1983
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
DYE LASERS
DYES
LASER MATERIALS
CHEMICAL PREPARATION
PHENOLS
ACID SULFATES
ALKALINE EARTH METAL COMPOUNDS
ALKYL RADICALS
HYDROGEN
HYDROXIDES
MEDIUM TEMPERATURE
SULFONATION
SULFURIC ACID
AROMATICS
CHEMICAL REACTIONS
ELEMENTS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INORGANIC ACIDS
LASERS
LIQUID LASERS
MATERIALS
NONMETALS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
RADICALS
SULFATES
SULFUR COMPOUNDS
SYNTHESIS
420300* - Engineering- Lasers- (-1989)